from machine import Pin
import time

LED_C5 = 37
LED_B0 = 16
LED_B1 = 17

LED_OUT1 = Pin(("PC5", LED_C5), Pin.OUT_PP)
LED_OUT2 = Pin(("PB0", LED_B0), Pin.OUT_PP)
LED_OUT3 = Pin(("PB1", LED_B1), Pin.OUT_PP)

while True:
    LED_OUT3.value(0)
    LED_OUT1.value(1)
    time.sleep(0.1)
    LED_OUT1.value(0)
    LED_OUT2.value(1)
    time.sleep(0.1)
    LED_OUT2.value(0)
    LED_OUT3.value(1)
    time.sleep(0.1)